code: def decode(input, output):
      """Decode a file; input and output are binary files."""
      while line := input.readline():
          s = binascii.a2b_base64(line)
          output.write(s)
  
imports: import re
  import struct
  import binascii
label_desc: Use image node_id 22 for calling a global function with example usage: decode(input, output) without return types